a26e3d81e8f7e1411ec2a182ee25e9989619663c1f7fb497b0a025744c5465b0

Analysis

max time kernel
153s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
10/03/2024, 05:51

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General

Target

2024-03-10_4c64bfebf060321e256eae7421739439_cryptolocker.exe
Size

38KB
MD5

4c64bfebf060321e256eae7421739439
SHA1

cb4722348a8ce6a1a43cacd0e98b9b6e876f6860
SHA256

a26e3d81e8f7e1411ec2a182ee25e9989619663c1f7fb497b0a025744c5465b0
SHA512

5463f2918be7b72f8ba5578c1a0c99da2fd0420d4864e1d4a3703de19415c06f55539221bf0de7f8c346c7b0fd98e7631b01e84d61ce6d07337daca1069d2844
SSDEEP

768:bIDOw9UiaCHfjnE0Sf88AvvP1oghYvm9/6DyE9xS:bIDOw9a0Dwo3P1ojvUSD79A

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000f000000023253-12.dat	CryptoLocker_rule2

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	2024-03-10_4c64bfebf060321e256eae7421739439_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
908	lossy.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4900 wrote to memory of 908	4900	2024-03-10_4c64bfebf060321e256eae7421739439_cryptolocker.exe	97
PID 4900 wrote to memory of 908	4900	2024-03-10_4c64bfebf060321e256eae7421739439_cryptolocker.exe	97
PID 4900 wrote to memory of 908	4900	2024-03-10_4c64bfebf060321e256eae7421739439_cryptolocker.exe	97

C:\Users\Admin\AppData\Local\Temp\2024-03-10_4c64bfebf060321e256eae7421739439_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-10_4c64bfebf060321e256eae7421739439_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4900
- C:\Users\Admin\AppData\Local\Temp\lossy.exe
  "C:\Users\Admin\AppData\Local\Temp\lossy.exe"
  2⤵
  - Executes dropped EXE
  PID:908

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=4088 --field-trial-handle=3088,i,14310325015283915034,7660943942870463106,262144 --variations-seed-version /prefetch:8
1⤵
PID:3060

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\lossy.exe

Filesize
38KB

MD5
aa38250eb2920847369ddaf48436cd36

SHA1
3a3ac46d0a74f647d3e505c3227bd78a9be0c9d5

SHA256
0e7778c0997cd21e7c3289315d09ca099b50d10ae285ba135176c437e8856c02

SHA512
5d2ce6602a4befd0b84efcb9c700825e831e066a9474b12e6b9d512e5d8830981d3aef601750e811835b299817cd87cefc25bd591a6a93f3192bdff958ab2174

Download Submit
memory/908-18-0x0000000002030000-0x0000000002036000-memory.dmp

Filesize
24KB

Download
memory/908-17-0x0000000002130000-0x0000000002136000-memory.dmp

Filesize
24KB

Download
memory/4900-0-0x00000000022F0000-0x00000000022F6000-memory.dmp

Filesize
24KB

Download
memory/4900-1-0x00000000022F0000-0x00000000022F6000-memory.dmp

Filesize
24KB

Download
memory/4900-2-0x0000000002180000-0x0000000002186000-memory.dmp

Filesize
24KB

Download